Peter, being delivered, meditates upon the greatness of the danger that he had been in, and the goodness of God that had delivered him, and this whilst walking in the street, and going along: no place can exclude good thoughts and holy meditations. The mother of John; the mother is here described by the son, as the more known person; here the parent gains reputation, and to be remembered in this Scripture, for her son's sake. Thus a wise son made a glad mother, as Proverbs 10:1. Mark; some think this was he that wrote the Gospel called by his name. Many were gathered together: in this time of persecution the Christians met secretly, and in small numbers, as they could; these here mentioned are thought to be private Christians, because it appears by the Acts 12:17, that James, &c. were not there.
Related Commentaries of Acts 12:12
Acts 12:12
12 And when he had considered the thing, he came to the house of Mary the mother of John, whose surname was Mark; where many were gathered together praying.